Method for preparing medicament for preventing and controlling corynespora leaf-fall disease of rubber trees
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A technology for defoliation and rubber trees, applied in the rubber field, can solve the problems of death, dwarf plants, and hinder the growth of seedlings around the tree.
Inactive Publication Date: 2014-12-24
JIANGYIN HAIDA RUBBER & PLASTIC GROUP
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The disease in the nursery hinders the thickening of the seedlings and fails to meet the budding requirements; the infected saplings repeatedly lose
Method used
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Embodiment 1
[0021] 1) Weigh 150 grams of Aquamarine, add 5 times its weight in an ethanol aqueous solution with a concentration of 85% by volume, heat and reflux for extraction for 1.5 hours, filter, and recover ethanol from the filtrate under reduced pressure, and concentrate until no ethanol is recovered, to obtain Extract 1;
[0022] 2) Weigh 200 grams of Yimuba, add water 5 times its weight, heat under reflux for 5 hours, cool to room temperature, filter, add ethanol to the filtrate until the ethanol content is 70% by volume, and place it for 24 hours , filtered, and the filtrate was decompressed to recover ethanol, and concentrated until no ethanol was recovered to obtain extract 2;
[0023] 3) Combine the extract 1 and the extract 2, add it into the sprayer, and get it.
Embodiment 2
[0025] Weigh 200 grams of Yimuzai, add water 5 times its weight, heat under reflux for 5 hours, cool to room temperature, filter, add ethanol to the filtrate until the ethanol content is 70% by volume, leave it for 24 hours, filter , the filtrate was decompressed to recover ethanol, and concentrated until no ethanol was recovered to obtain extract 1; add it to a sprayer to obtain.
Embodiment 3
[0027] Weigh 150 grams of Aquamarine, add 5 times its weight in an ethanol aqueous solution with a volume percentage concentration of 85%, heat and reflux for extraction for 1.5 hours, filter, and recover ethanol from the filtrate under reduced pressure, and concentrate until no ethanol is recovered to obtain an extract 1; add to the sprayer, that is.
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Abstract
The invention relates to a method for preparing a medicament for preventing and controlling a corynespora leaf-fall disease of rubber trees. The method comprises the following steps: (1) weighing corymbose hedyotis herb, adding ethanol water with the volume percent concentration of 70-90 percent and the weight of 3-6 times of that of the corymbose hedyotis herb, and heating for reflux extraction for 1-3 hours; filtering, reducing the pressure of filtrate and recovering ethanol, concentrating until no ethanol is recovered, and obtaining an extracting solution 1; (2) weighing allophylus viridis, adding water with the weight of 3-6 times of that of the allophylus viridis, heating for 3-6 hours under the reflux condition, and cooling to a room temperature; filtering, adding ethanol in filtrate until the content of ethanol is 50-80 volume percent, and placing for 12-48 hours; filtering, reducing the pressure of the filtrate and recovering ethanol, concentrating until no ethanol is recovered, and obtaining an extracting solution 2; (3) merging the extracting solutions. The medicament for preventing and controlling the corynespora leaf-fall disease of the rubber trees is a good medicament for preventing and controlling the corynespora leaf-fall disease of the rubber trees in the fields, and the effect is superior to that of some usual antibacterial agents.
Description
technical field [0001] The invention relates to the field of rubber, in particular to a preparation method of a medicament for preventing and treating Corynesporium leaf defoliation of rubber trees. Background technique [0002] Rubber tree Corynesporium leaf defoliation is a devastating disease that can harm rubber seedlings, saplings and mature trees, and damage leaves, young shoots and twigs of all ages, causing leaves to fall off, bark to burst, and young shoots to wither. The disease in the nursery hinders the thickening of the seedlings and fails to meet the budding requirements; the infected saplings repeatedly lose their leaves, the crown is exposed, the plants are dwarfed or even die; the infection of the tapping trees seriously reduces the dry rubber production. At present, the disease often occurs in rubber producing areas, which seriously threatens the normal operation of the downstream rubber industry. Contents of the invention [0003] The object of the pres...
Claims
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